Commit 1042b22d authored by Corey Minyard's avatar Corey Minyard
Browse files

i2c:smbus_eeprom: Add a reset function to smbus_eeprom 



Reset the contents to init data and reset the offset on a machine
reset.

Signed-off-by: default avatarCorey Minyard <cminyard@mvista.com>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
parent fd9df33f

hw/i2c/smbus_eeprom.c

+17 −1
Original line number Diff line number Diff line
@@ -108,7 +108,17 @@ static const VMStateDescription vmstate_smbus_eeprom = { 
    }

};



static void smbus_eeprom_realize(DeviceState *dev, Error **errp)

/*

 * Reset the EEPROM contents to the initial state on a reset.  This

 * isn't really how an EEPROM works, of course, but the general

 * principle of QEMU is to restore function on reset to what it would

 * be if QEMU was stopped and started.

 *

 * The proper thing to do would be to have a backing blockdev to hold

 * the contents and restore that on startup, and not do this on reset.

 * But until that time, act as if we had been stopped and restarted.

 */

static void smbus_eeprom_reset(DeviceState *dev)

{

    SMBusEEPROMDevice *eeprom = SMBUS_EEPROM(dev);
@@ -116,6 +126,11 @@ static void smbus_eeprom_realize(DeviceState *dev, Error **errp) 
    eeprom->offset = 0;

}



static void smbus_eeprom_realize(DeviceState *dev, Error **errp)

{

    smbus_eeprom_reset(dev);

}



static Property smbus_eeprom_properties[] = {

    DEFINE_PROP_PTR("data", SMBusEEPROMDevice, init_data),

    DEFINE_PROP_END_OF_LIST(),
@@ -127,6 +142,7 @@ static void smbus_eeprom_class_initfn(ObjectClass *klass, void *data) 
    SMBusDeviceClass *sc = SMBUS_DEVICE_CLASS(klass);



    dc->realize = smbus_eeprom_realize;

    dc->reset = smbus_eeprom_reset;

    sc->receive_byte = eeprom_receive_byte;

    sc->write_data = eeprom_write_data;

    dc->props = smbus_eeprom_properties;